src/com/owncloud/android/operations/RefreshFolderOperation.java

   1 /**
   2  *   ownCloud Android client application
   3  *
   4  *   @author David A. Velasco
   5  *   Copyright (C) 2015 ownCloud Inc.
   6  *
   7  *   This program is free software: you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License version 2,
   9  *   as published by the Free Software Foundation.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  *
  19  */
  20
  21 package com.owncloud.android.operations;
  22
  23 import java.io.File;
  24 import java.io.FileInputStream;
  25 import java.io.FileOutputStream;
  26 import java.io.IOException;
  27 import java.io.InputStream;
  28 import java.io.OutputStream;
  29 import java.util.ArrayList;
  30 import java.util.HashMap;
  31 import java.util.List;
  32 import java.util.Map;
  33 import java.util.Vector;
  34
  35 import org.apache.http.HttpStatus;
  36 import android.accounts.Account;
  37 import android.content.Context;
  38 import android.content.Intent;
  39 import android.util.Log;
  40 //import android.support.v4.content.LocalBroadcastManager;
  41
  42 import com.owncloud.android.datamodel.FileDataStorageManager;
  43 import com.owncloud.android.datamodel.OCFile;
  44
  45 import com.owncloud.android.lib.common.OwnCloudClient;
  46 import com.owncloud.android.lib.resources.shares.OCShare;
  47 import com.owncloud.android.lib.common.operations.RemoteOperation;
  48 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
  49 import com.owncloud.android.lib.common.operations.RemoteOperationResult.ResultCode;
  50 import com.owncloud.android.lib.common.utils.Log_OC;
  51 import com.owncloud.android.lib.resources.shares.GetRemoteSharesForFileOperation;
  52 import com.owncloud.android.lib.resources.files.FileUtils;
  53 import com.owncloud.android.lib.resources.files.ReadRemoteFileOperation;
  54 import com.owncloud.android.lib.resources.files.ReadRemoteFolderOperation;
  55 import com.owncloud.android.lib.resources.files.RemoteFile;
  56
  57 import com.owncloud.android.syncadapter.FileSyncAdapter;
  58 import com.owncloud.android.utils.FileStorageUtils;
  59
  60
  61
  62 /**
  63  *  Remote operation performing the synchronization of the list of files contained
  64  *  in a folder identified with its remote path.
  65  *
  66  *  Fetches the list and properties of the files contained in the given folder, including their
  67  *  properties, and updates the local database with them.
  68  *
  69  *  Does NOT enter in the child folders to synchronize their contents also.
  70  */
  71 public class RefreshFolderOperation extends RemoteOperation {
  72
  73     private static final String TAG = RefreshFolderOperation.class.getSimpleName();
  74
  75     public static final String EVENT_SINGLE_FOLDER_CONTENTS_SYNCED  =
  76             RefreshFolderOperation.class.getName() + ".EVENT_SINGLE_FOLDER_CONTENTS_SYNCED";
  77     public static final String EVENT_SINGLE_FOLDER_SHARES_SYNCED    =
  78             RefreshFolderOperation.class.getName() + ".EVENT_SINGLE_FOLDER_SHARES_SYNCED";
  79
  80     /** Time stamp for the synchronization process in progress */
  81     private long mCurrentSyncTime;
  82
  83     /** Remote folder to synchronize */
  84     private OCFile mLocalFolder;
  85
  86     /** Access to the local database */
  87     private FileDataStorageManager mStorageManager;
  88
  89     /** Account where the file to synchronize belongs */
  90     private Account mAccount;
  91
  92     /** Android context; necessary to send requests to the download service */
  93     private Context mContext;
  94
  95     /** Files and folders contained in the synchronized folder after a successful operation */
  96     private List<OCFile> mChildren;
  97
  98     /** Counter of conflicts found between local and remote files */
  99     private int mConflictsFound;
 100
 101     /** Counter of failed operations in synchronization of kept-in-sync files */
 102     private int mFailsInFavouritesFound;
 103
 104     /**
 105      * Map of remote and local paths to files that where locally stored in a location
 106      * out of the ownCloud folder and couldn't be copied automatically into it
 107      **/
 108     private Map<String, String> mForgottenLocalFiles;
 109
 110     /** 'True' means that this operation is part of a full account synchronization */
 111     private boolean mSyncFullAccount;
 112
 113     /** 'True' means that Share resources bound to the files into should be refreshed also */
 114     private boolean mIsShareSupported;
 115
 116     /** 'True' means that the remote folder changed and should be fetched */
 117     private boolean mRemoteFolderChanged;
 118
 119     /** 'True' means that Etag will be ignored */
 120     private boolean mIgnoreETag;
 121
 122
 123     /**
 124      * Creates a new instance of {@link RefreshFolderOperation}.
 125      *
 126      * @param   folder                  Folder to synchronize.
 127      * @param   currentSyncTime         Time stamp for the synchronization process in progress.
 128      * @param   syncFullAccount         'True' means that this operation is part of a full account
 129      *                                  synchronization.
 130      * @param   isShareSupported        'True' means that the server supports the sharing API.
 131      * @param   ignoreEtag              'True' means that the content of the remote folder should
 132      *                                  be fetched and updated even though the 'eTag' did not
 133      *                                  change.
 134      * @param   dataStorageManager      Interface with the local database.
 135      * @param   account                 ownCloud account where the folder is located.
 136      * @param   context                 Application context.
 137      */
 138     public RefreshFolderOperation(OCFile folder,
 139                                   long currentSyncTime,
 140                                   boolean syncFullAccount,
 141                                   boolean isShareSupported,
 142                                   boolean ignoreETag,
 143                                   FileDataStorageManager dataStorageManager,
 144                                   Account account,
 145                                   Context context) {
 146         mLocalFolder = folder;
 147         mCurrentSyncTime = currentSyncTime;
 148         mSyncFullAccount = syncFullAccount;
 149         mIsShareSupported = isShareSupported;
 150         mStorageManager = dataStorageManager;
 151         mAccount = account;
 152         mContext = context;
 153         mForgottenLocalFiles = new HashMap<String, String>();
 154         mRemoteFolderChanged = false;
 155         mIgnoreETag = ignoreETag;
 156     }
 157
 158
 159     public int getConflictsFound() {
 160         return mConflictsFound;
 161     }
 162
 163     public int getFailsInFavouritesFound() {
 164         return mFailsInFavouritesFound;
 165     }
 166
 167     public Map<String, String> getForgottenLocalFiles() {
 168         return mForgottenLocalFiles;
 169     }
 170
 171     /**
 172      * Returns the list of files and folders contained in the synchronized folder,
 173      * if called after synchronization is complete.
 174      *
 175      * @return  List of files and folders contained in the synchronized folder.
 176      */
 177     public List<OCFile> getChildren() {
 178         return mChildren;
 179     }
 180
 181     /**
 182      * Performs the synchronization.
 183      *
 184      * {@inheritDoc}
 185      */
 186     @Override
 187     protected RemoteOperationResult run(OwnCloudClient client) {
 188         RemoteOperationResult result = null;
 189         mFailsInFavouritesFound = 0;
 190         mConflictsFound = 0;
 191         mForgottenLocalFiles.clear();
 192
 193         if (FileUtils.PATH_SEPARATOR.equals(mLocalFolder.getRemotePath()) && !mSyncFullAccount) {
 194             updateOCVersion(client);
 195         }
 196
 197         result = checkForChanges(client);
 198
 199         if (result.isSuccess()) {
 200             if (mRemoteFolderChanged) {
 201                 result = fetchAndSyncRemoteFolder(client);
 202             } else {
 203                 mChildren = mStorageManager.getFolderContent(mLocalFolder);
 204             }
 205         }
 206
 207         if (!mSyncFullAccount) {
 208             sendLocalBroadcast(
 209                     EVENT_SINGLE_FOLDER_CONTENTS_SYNCED, mLocalFolder.getRemotePath(), result
 210             );
 211         }
 212
 213         if (result.isSuccess() && mIsShareSupported && !mSyncFullAccount) {
 214             refreshSharesForFolder(client); // share result is ignored
 215         }
 216
 217         if (!mSyncFullAccount) {
 218             sendLocalBroadcast(
 219                     EVENT_SINGLE_FOLDER_SHARES_SYNCED, mLocalFolder.getRemotePath(), result
 220             );
 221         }
 222
 223         return result;
 224
 225     }
 226
 227
 228     private void updateOCVersion(OwnCloudClient client) {
 229         UpdateOCVersionOperation update = new UpdateOCVersionOperation(mAccount, mContext);
 230         RemoteOperationResult result = update.execute(client);
 231         if (result.isSuccess()) {
 232             mIsShareSupported = update.getOCVersion().isSharedSupported();
 233         }
 234     }
 235
 236
 237     private RemoteOperationResult checkForChanges(OwnCloudClient client) {
 238         mRemoteFolderChanged = true;
 239         RemoteOperationResult result = null;
 240         String remotePath = null;
 241
 242         remotePath = mLocalFolder.getRemotePath();
 243         Log_OC.d(TAG, "Checking changes in " + mAccount.name + remotePath);
 244
 245         // remote request
 246         ReadRemoteFileOperation operation = new ReadRemoteFileOperation(remotePath);
 247         result = operation.execute(client);
 248         if (result.isSuccess()){
 249             OCFile remoteFolder = FileStorageUtils.fillOCFile((RemoteFile) result.getData().get(0));
 250
 251             if (!mIgnoreETag) {
 252                 // check if remote and local folder are different
 253                 mRemoteFolderChanged =
 254                         !(remoteFolder.getEtag().equalsIgnoreCase(mLocalFolder.getEtag()));
 255             }
 256
 257             result = new RemoteOperationResult(ResultCode.OK);
 258
 259             Log_OC.i(TAG, "Checked " + mAccount.name + remotePath + " : " +
 260                     (mRemoteFolderChanged ? "changed" : "not changed"));
 261
 262         } else {
 263             // check failed
 264             if (result.getCode() == ResultCode.FILE_NOT_FOUND) {
 265                 removeLocalFolder();
 266             }
 267             if (result.isException()) {
 268                 Log_OC.e(TAG, "Checked " + mAccount.name + remotePath  + " : " +
 269                         result.getLogMessage(), result.getException());
 270             } else {
 271                 Log_OC.e(TAG, "Checked " + mAccount.name + remotePath + " : " +
 272                         result.getLogMessage());
 273             }
 274         }
 275
 276         return result;
 277     }
 278
 279
 280     private RemoteOperationResult fetchAndSyncRemoteFolder(OwnCloudClient client) {
 281         String remotePath = mLocalFolder.getRemotePath();
 282         ReadRemoteFolderOperation operation = new ReadRemoteFolderOperation(remotePath);
 283         RemoteOperationResult result = operation.execute(client);
 284         Log_OC.d(TAG, "Synchronizing " + mAccount.name + remotePath);
 285
 286         if (result.isSuccess()) {
 287             synchronizeData(result.getData(), client);
 288             if (mConflictsFound > 0  || mFailsInFavouritesFound > 0) {
 289                 result = new RemoteOperationResult(ResultCode.SYNC_CONFLICT);
 290                     // should be a different result code, but will do the job
 291             }
 292         } else {
 293             if (result.getCode() == ResultCode.FILE_NOT_FOUND)
 294                 removeLocalFolder();
 295         }
 296
 297         return result;
 298     }
 299
 300
 301     private void removeLocalFolder() {
 302         if (mStorageManager.fileExists(mLocalFolder.getFileId())) {
 303             String currentSavePath = FileStorageUtils.getSavePath(mAccount.name);
 304             mStorageManager.removeFolder(
 305                     mLocalFolder,
 306                     true,
 307                     (   mLocalFolder.isDown() &&
 308                             mLocalFolder.getStoragePath().startsWith(currentSavePath)
 309                     )
 310             );
 311         }
 312     }
 313
 314
 315     /**
 316      *  Synchronizes the data retrieved from the server about the contents of the target folder
 317      *  with the current data in the local database.
 318      *
 319      *  Grants that mChildren is updated with fresh data after execution.
 320      *
 321      *  @param folderAndFiles   Remote folder and children files in Folder
 322      *
 323      *  @param client           Client instance to the remote server where the data were
 324      *                          retrieved.
 325      *  @return                 'True' when any change was made in the local data, 'false' otherwise
 326      */
 327     private void synchronizeData(ArrayList<Object> folderAndFiles, OwnCloudClient client) {
 328         // get 'fresh data' from the database
 329         mLocalFolder = mStorageManager.getFileByPath(mLocalFolder.getRemotePath());
 330
 331         // parse data from remote folder
 332         OCFile remoteFolder = fillOCFile((RemoteFile)folderAndFiles.get(0));
 333         remoteFolder.setParentId(mLocalFolder.getParentId());
 334         remoteFolder.setFileId(mLocalFolder.getFileId());
 335
 336         Log_OC.d(TAG, "Remote folder " + mLocalFolder.getRemotePath()
 337                 + " changed - starting update of local data ");
 338
 339         List<OCFile> updatedFiles = new Vector<OCFile>(folderAndFiles.size() - 1);
 340         List<SynchronizeFileOperation> filesToSyncContents = new Vector<SynchronizeFileOperation>();
 341
 342         // get current data about local contents of the folder to synchronize
 343         List<OCFile> localFiles = mStorageManager.getFolderContent(mLocalFolder);
 344         Map<String, OCFile> localFilesMap = new HashMap<String, OCFile>(localFiles.size());
 345         for (OCFile file : localFiles) {
 346             localFilesMap.put(file.getRemotePath(), file);
 347         }
 348
 349         // loop to update every child
 350         OCFile remoteFile = null, localFile = null;
 351         for (int i=1; i<folderAndFiles.size(); i++) {
 352             /// new OCFile instance with the data from the server
 353             remoteFile = fillOCFile((RemoteFile)folderAndFiles.get(i));
 354             remoteFile.setParentId(mLocalFolder.getFileId());
 355
 356             /// retrieve local data for the read file
 357             //  localFile = mStorageManager.getFileByPath(remoteFile.getRemotePath());
 358             localFile = localFilesMap.remove(remoteFile.getRemotePath());
 359
 360             /// add to the remoteFile (the new one) data about LOCAL STATE (not existing in server)
 361             remoteFile.setLastSyncDateForProperties(mCurrentSyncTime);
 362             if (localFile != null) {
 363                 // some properties of local state are kept unmodified
 364                 remoteFile.setFileId(localFile.getFileId());
 365                 remoteFile.setKeepInSync(localFile.keepInSync());
 366                 remoteFile.setLastSyncDateForData(localFile.getLastSyncDateForData());
 367                 remoteFile.setModificationTimestampAtLastSyncForData(
 368                         localFile.getModificationTimestampAtLastSyncForData()
 369                 );
 370                 remoteFile.setStoragePath(localFile.getStoragePath());
 371                 // eTag will not be updated unless contents are synchronized
 372                 //  (Synchronize[File|Folder]Operation with remoteFile as parameter)
 373                 remoteFile.setEtag(localFile.getEtag());
 374                 if (remoteFile.isFolder()) {
 375                     remoteFile.setFileLength(localFile.getFileLength());
 376                         // TODO move operations about size of folders to FileContentProvider
 377                 } else if (mRemoteFolderChanged && remoteFile.isImage() &&
 378                         remoteFile.getModificationTimestamp() != localFile.getModificationTimestamp()) {
 379                     remoteFile.setNeedsUpdateThumbnail(true);
 380                     Log.d(TAG, "Image " + remoteFile.getFileName() + " updated on the server");
 381                 }
 382                 remoteFile.setPublicLink(localFile.getPublicLink());
 383                 remoteFile.setShareByLink(localFile.isShareByLink());
 384             } else {
 385                 // remote eTag will not be updated unless contents are synchronized
 386                 //  (Synchronize[File|Folder]Operation with remoteFile as parameter)
 387                 remoteFile.setEtag("");
 388             }
 389
 390             /// check and fix, if needed, local storage path
 391             checkAndFixForeignStoragePath(remoteFile);      // policy - local files are COPIED
 392                                                             // into the ownCloud local folder;
 393             searchForLocalFileInDefaultPath(remoteFile);    // legacy
 394
 395             /// prepare content synchronization for kept-in-sync files
 396             if (remoteFile.keepInSync()) {
 397                 SynchronizeFileOperation operation = new SynchronizeFileOperation(  localFile,
 398                                                                                     remoteFile,
 399                                                                                     mAccount,
 400                                                                                     true,
 401                                                                                     mContext
 402                                                                                     );
 403
 404                 filesToSyncContents.add(operation);
 405             }
 406
 407             updatedFiles.add(remoteFile);
 408         }
 409
 410         // save updated contents in local database
 411         mStorageManager.saveFolder(remoteFolder, updatedFiles, localFilesMap.values());
 412
 413         // request for the synchronization of file contents AFTER saving current remote properties
 414         startContentSynchronizations(filesToSyncContents, client);
 415
 416         mChildren = updatedFiles;
 417     }
 418
 419     /**
 420      * Performs a list of synchronization operations, determining if a download or upload is needed
 421      * or if exists conflict due to changes both in local and remote contents of the each file.
 422      *
 423      * If download or upload is needed, request the operation to the corresponding service and goes
 424      * on.
 425      *
 426      * @param filesToSyncContents       Synchronization operations to execute.
 427      * @param client                    Interface to the remote ownCloud server.
 428      */
 429     private void startContentSynchronizations(
 430             List<SynchronizeFileOperation> filesToSyncContents, OwnCloudClient client
 431         ) {
 432         RemoteOperationResult contentsResult = null;
 433         for (SynchronizeFileOperation op: filesToSyncContents) {
 434             contentsResult = op.execute(mStorageManager, mContext);   // async
 435             if (!contentsResult.isSuccess()) {
 436                 if (contentsResult.getCode() == ResultCode.SYNC_CONFLICT) {
 437                     mConflictsFound++;
 438                 } else {
 439                     mFailsInFavouritesFound++;
 440                     if (contentsResult.getException() != null) {
 441                         Log_OC.e(TAG, "Error while synchronizing favourites : "
 442                                 +  contentsResult.getLogMessage(), contentsResult.getException());
 443                     } else {
 444                         Log_OC.e(TAG, "Error while synchronizing favourites : "
 445                                 + contentsResult.getLogMessage());
 446                     }
 447                 }
 448             }   // won't let these fails break the synchronization process
 449         }
 450     }
 451
 452
 453     public boolean isMultiStatus(int status) {
 454         return (status == HttpStatus.SC_MULTI_STATUS);
 455     }
 456
 457     /**
 458      * Creates and populates a new {@link OCFile} object with the data read from the server.
 459      *
 460      * @param remote    remote file read from the server (remote file or folder).
 461      * @return          New OCFile instance representing the remote resource described by we.
 462      */
 463     private OCFile fillOCFile(RemoteFile remote) {
 464         OCFile file = new OCFile(remote.getRemotePath());
 465         file.setCreationTimestamp(remote.getCreationTimestamp());
 466         file.setFileLength(remote.getLength());
 467         file.setMimetype(remote.getMimeType());
 468         file.setModificationTimestamp(remote.getModifiedTimestamp());
 469         file.setEtag(remote.getEtag());
 470         file.setPermissions(remote.getPermissions());
 471         file.setRemoteId(remote.getRemoteId());
 472         return file;
 473     }
 474
 475
 476     /**
 477      * Checks the storage path of the OCFile received as parameter.
 478      * If it's out of the local ownCloud folder, tries to copy the file inside it.
 479      *
 480      * If the copy fails, the link to the local file is nullified. The account of forgotten
 481      * files is kept in {@link #mForgottenLocalFiles}
 482      *)
 483      * @param file      File to check and fix.
 484      */
 485     private void checkAndFixForeignStoragePath(OCFile file) {
 486         String storagePath = file.getStoragePath();
 487         String expectedPath = FileStorageUtils.getDefaultSavePathFor(mAccount.name, file);
 488         if (storagePath != null && !storagePath.equals(expectedPath)) {
 489             /// fix storagePaths out of the local ownCloud folder
 490             File originalFile = new File(storagePath);
 491             if (FileStorageUtils.getUsableSpace(mAccount.name) < originalFile.length()) {
 492                 mForgottenLocalFiles.put(file.getRemotePath(), storagePath);
 493                 file.setStoragePath(null);
 494
 495             } else {
 496                 InputStream in = null;
 497                 OutputStream out = null;
 498                 try {
 499                     File expectedFile = new File(expectedPath);
 500                     File expectedParent = expectedFile.getParentFile();
 501                     expectedParent.mkdirs();
 502                     if (!expectedParent.isDirectory()) {
 503                         throw new IOException(
 504                                 "Unexpected error: parent directory could not be created"
 505                         );
 506                     }
 507                     expectedFile.createNewFile();
 508                     if (!expectedFile.isFile()) {
 509                         throw new IOException("Unexpected error: target file could not be created");
 510                     }
 511                     in = new FileInputStream(originalFile);
 512                     out = new FileOutputStream(expectedFile);
 513                     byte[] buf = new byte[1024];
 514                     int len;
 515                     while ((len = in.read(buf)) > 0){
 516                         out.write(buf, 0, len);
 517                     }
 518                     file.setStoragePath(expectedPath);
 519
 520                 } catch (Exception e) {
 521                     Log_OC.e(TAG, "Exception while copying foreign file " + expectedPath, e);
 522                     mForgottenLocalFiles.put(file.getRemotePath(), storagePath);
 523                     file.setStoragePath(null);
 524
 525                 } finally {
 526                     try {
 527                         if (in != null) in.close();
 528                     } catch (Exception e) {
 529                         Log_OC.d(TAG, "Weird exception while closing input stream for "
 530                                 + storagePath + " (ignoring)", e);
 531                     }
 532                     try {
 533                         if (out != null) out.close();
 534                     } catch (Exception e) {
 535                         Log_OC.d(TAG, "Weird exception while closing output stream for "
 536                                 + expectedPath + " (ignoring)", e);
 537                     }
 538                 }
 539             }
 540         }
 541     }
 542
 543
 544     private RemoteOperationResult refreshSharesForFolder(OwnCloudClient client) {
 545         RemoteOperationResult result = null;
 546
 547         // remote request
 548         GetRemoteSharesForFileOperation operation =
 549                 new GetRemoteSharesForFileOperation(mLocalFolder.getRemotePath(), false, true);
 550         result = operation.execute(client);
 551
 552         if (result.isSuccess()) {
 553             // update local database
 554             ArrayList<OCShare> shares = new ArrayList<OCShare>();
 555             for(Object obj: result.getData()) {
 556                 shares.add((OCShare) obj);
 557             }
 558             mStorageManager.saveSharesInFolder(shares, mLocalFolder);
 559         }
 560
 561         return result;
 562     }
 563
 564
 565     /**
 566      * Scans the default location for saving local copies of files searching for
 567      * a 'lost' file with the same full name as the {@link OCFile} received as
 568      * parameter.
 569      *
 570      * @param file      File to associate a possible 'lost' local file.
 571      */
 572     private void searchForLocalFileInDefaultPath(OCFile file) {
 573         if (file.getStoragePath() == null && !file.isFolder()) {
 574             File f = new File(FileStorageUtils.getDefaultSavePathFor(mAccount.name, file));
 575             if (f.exists()) {
 576                 file.setStoragePath(f.getAbsolutePath());
 577                 file.setLastSyncDateForData(f.lastModified());
 578             }
 579         }
 580     }
 581
 582
 583     /**
 584      * Sends a message to any application component interested in the progress
 585      * of the synchronization.
 586      *
 587      * @param event
 588      * @param dirRemotePath     Remote path of a folder that was just synchronized
 589      *                          (with or without success)
 590      * @param result
 591      */
 592     private void sendLocalBroadcast(
 593             String event, String dirRemotePath, RemoteOperationResult result
 594         ) {
 595         Log_OC.d(TAG, "Send broadcast " + event);
 596         Intent intent = new Intent(event);
 597         intent.putExtra(FileSyncAdapter.EXTRA_ACCOUNT_NAME, mAccount.name);
 598         if (dirRemotePath != null) {
 599             intent.putExtra(FileSyncAdapter.EXTRA_FOLDER_PATH, dirRemotePath);
 600         }
 601         intent.putExtra(FileSyncAdapter.EXTRA_RESULT, result);
 602         mContext.sendStickyBroadcast(intent);
 603         //LocalBroadcastManager.getInstance(mContext).sendBroadcast(intent);
 604     }
 605
 606
 607     public boolean getRemoteFolderChanged() {
 608         return mRemoteFolderChanged;
 609     }
 610
 611 }